The most relevant free energy in human physiology is the energy stored in ________
A) radioisotopes
B) the chemical bonds of organic molecules
C) electrolytes ionized in water
D) free radicals with an odd number of electrons
E) Van der Waals forces
B
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Which of the following changes in the digestive system occurs with advancing age?
A) increase in smooth muscle tone B) decreased cancer rates C) decline in epithelial stem cell division D) thickening of the stratified epithelium E) increased osmoreceptor sensitivity
If we were able to artificially alter the membrane permeability of pacemaker cells so that sodium influx is more rapid, ________.
A) threshold is reached more quickly and heart rate would increase B) potassium channels compensate and no change in heart rate would occur C) heart rate would decrease, but blood pressure would rise due to the excess sodium present D) tetanic contraction would occur due to the short absolute refractory period of cardiac muscle
The ________ is the small mass in the nucleus RNA, which in turn forms forms ribosomes
Fill in the blank(s) with correct word
The shoulder is ________ to the elbow.
A. dorsal B. proximal C. lateral D. ventral E. distal